Casio Men's G-Shock Master of G Mudmaster Carbon Core Guard Quad Sensor Connected Grey Resin Watch GGB100-1A

4.6 4.6 out of 5 stars 490 ratings

To see product details, add this item to your cart. You can always remove it later.
No featured offers available Learn more

No featured offers available

We feature offers with an Add to Cart button when an offer meets our high standards for:

  • Quality Price,
  • Reliable delivery option, and
  • Seller who offers good customer service
“No featured offers available” means no offers currently meet all of these expectations. Select See All Buying Options to shop available offers.

Select delivery location
Added to

Sorry, there was a problem.

There was an error retrieving your Wish Lists. Please try again.

Sorry, there was a problem.

List unavailable.

Looking for specific info?

Product Description

From Casio G-Shock, the innovators of tough timekeeping, comes the GGB100 Master of G Mudmaster watch series that has been designed to endure the toughest environments. This watch features a carbon core guard structure case, in black with grey accents, that allows the internal mechanics of the watch to be protected from shock-induced damage. This watch is mud resistant with metal buttons that form a tight seal on the case, a dual back cover that consists of a stainless steel panel back and an outer cover made of shock resistant fine resin embedded with glass fibers, and the bezel has three layers of fine resin with carbon fiber inserts. The Quad Sensor capabilities provide instant access to a compass, altitude/barometer, thermometer, and an accelerometer that keeps track of your step count. Additionally, this watch connects via Bluetooth to a special G-Shock app that helps with the configuration, as well as records altitude data, route information, and step counts. These recordings are used to create an activity log you can use for tracking. Mode Switching Customization allows you to turn on and off individual modes and their sequence, for a personalized feel. This capable watch is finished with a grey resin band.

Features of this highly functional watch include:Shock ResistantMud ResistantCarbon Core Guard structure200 meter water resistanceGrey resin bandCarbon and resin caseNeobriteDouble LED lightMobile link (Wireless linking using Bluetooth(R))Digital compassAltimeterAuto log data (High/low altitudes, cumulative ascent and descent)BarometerThermometerStep count using a 3-axis acceleration sensor: 0 to 999,999 step count display rangePower Saving: Auto sensor sleep state entry after fixed period of non-activityWorld time with 38 time zonesSunrise, sunset time display1/100-second

Product specifications

Watch Information
Brand, Seller, or Collection Name Casio
Model number GGB100-1A
Part Number GGB100-1A
Item Shape Round
Dial window material type Mineral Glass
Display Type Analog-Digital
Clasp Buckle
Metal stamp no-metal-stamp
Case material Carbon/Resin
Case diameter 5.5 centimeters
Case Thickness 6 millimeters
Band Material Resin
Band width 24
Band Color Black
Dial color Black
Special features Shock Resistant, Compass, Thermometer, Barometer, Accelerometer, World Time
Item weight 3.25 ounces
Movement Quartz
Water resistant depth 200 Meters
Warranty If this product is sold by Amazon, please review the manufacturer’s website for warranty information. If this product is sold by another party, please contact the seller directly for warranty information for this product. You may also be able to find warranty information on the manufacturer’s website.

Product details

  • Product Dimensions ‏ : ‎ 5 x 5 x 5 inches; 3.25 ounces
  • Item model number ‏ : ‎ GGB100-1A
  • Department ‏ : ‎ mens
  • Batteries ‏ : ‎ 1 Lithium Metal batteries required. (included)
  • Date First Available ‏ : ‎ August 5, 2019
  • Manufacturer ‏ : ‎ Casio Tactical
  • ASIN ‏ : ‎ B07W43VGYC
  • Customer Reviews:
    4.6 4.6 out of 5 stars 490 ratings

Customer reviews

4.6 out of 5 stars
4.6 out of 5
490 global ratings

Customers say

Customers like the features and functions of the watch. They mention it has many fantastic features and buttons, and can be controlled with an app on their cellphone. They also appreciate the durability, readability, and weight of the product. That said, some complain about the performance and size.

AI-generated from the text of customer reviews

23 customers mention23 positive0 negative

Customers like the appearance of the watch. They say it's a nice looking watch, has tons of features, and looks and feels fantastic. Some customers also enjoy the new carbon case design and the dial. Overall, customers are satisfied with the appearance and functionality of the product.

"The Casio Men's G-Shock Mudmaster GGB100-1A is a true masterpiece of engineering and design, combining rugged durability with advanced features to..." Read more

"...This watch meets all of the criteria and looks very nice!..." Read more

"Nice watch" Read more

"...I enjoy the new carbon case design here as well as the dial. The carbon fiber bezel really sets this watch off...." Read more

19 customers mention17 positive2 negative

Customers like the quality of the watch. They say it looks and feels fantastic, is an excellent purchase all around, and is a great investment. Customers also mention that the watch is affordable and has very useful features. They also say it's a technical watch that connects to their phone's Bluetooth.

"...Arrived on time in perfect brand new condition. This is a technical watch, connects to your phones Bluetooth. Has a ton of functions and buttons." Read more

"...Even better price!" Read more

"...the watch easy and the four sensors work great There are some great YouTube videos explaining how to use the watch also.Overall a great watch." Read more

"Great watch! Good looking, plenty of features...." Read more

14 customers mention14 positive0 negative

Customers are satisfied with the durability of the watch. They mention that it is dependable, rugged, and elegant. The watch is also protected by a scratch-resistant mineral crystal, ensuring its long-lasting performance.

"...The large, easy-to-read display is protected by scratch-resistant mineral crystal, ensuring that the watch remains looking great even after years of..." Read more

"What I needed was a highly durable watch, very easy to read, with no hassle in keeping it on the correct date and time...." Read more

"Fast shipping and good quality" Read more

"...It looks elegant with its purpose built style - but it’s lightweight and has all the features you need in a usable watch...." Read more

13 customers mention13 positive0 negative

Customers like the features of the watch. They say it has many fantastic features, functions, and buttons. They also appreciate the ability to control all of the features with an app on their cellphone. Customers say the watch combines functions and agility. They love the find your phone feature and the Casio App, which is exceptionally useful and helpful. Customers also mention that the watch offers a wealth of useful information for outdoor enthusiasts.

"...allow you to sync the watch with your smartphone for enhanced functionality and customization, adding a new level of convenience to your daily..." Read more

"...this watch to my iPhone with the Casio App turned out to be exceptionally useful and very helpful...." Read more

"...Has a ton of functions and buttons." Read more

"...activities; world time; alarms; step tracker with calorie count; locator function for where I park my car, and easy to read dial at night...." Read more

12 customers mention9 positive3 negative

Customers like the readability of the watch. They mention that it is tough as nails, easy to read, and bold. Some say that the product is easy to set up and read the face.

"...The large, easy-to-read display is protected by scratch-resistant mineral crystal, ensuring that the watch remains looking great even after years of..." Read more

"What I needed was a highly durable watch, very easy to read, with no hassle in keeping it on the correct date and time...." Read more

"...calorie count; locator function for where I park my car, and easy to read dial at night...." Read more

"...the mudmaster for this reason, this is a bold looking watch that is easy to read. I enjoy the new carbon case design here as well as the dial...." Read more

7 customers mention7 positive0 negative

Customers find the weight of the watch to be light.

"...which provides exceptional durability while keeping the watch lightweight and comfortable to wear...." Read more

"...Comfort- Casio has a way of making these big watches wear so well, lightweight, as it curves to the top of your wrist so nicely and mold to your..." Read more

"...This one is the best. BIG face (over 50mm) lightweight and an easy to read face. The best part? It did not take a PhD to set the time and program it...." Read more

"The watch looks great if you like larger watches and is so light weight that it's comfortable to wear all day...." Read more

9 customers mention5 positive4 negative

Customers are mixed about the size of the watch. Some mention that it has a nice size and face, while others say that it was way too small. Some say that the digital display was small and the analog hands were analog. Overall, the opinions are mixed and the watch is not a good fit for all customers.

"...The large, easy-to-read display is protected by scratch-resistant mineral crystal, ensuring that the watch remains looking great even after years of..." Read more

"...However, it didn't fit well on my wrist...so I had to send it back. There was a restocking fee as well...that I was unaware of as well...." Read more

"...This one is the best. BIG face (over 50mm) lightweight and an easy to read face. The best part? It did not take a PhD to set the time and program it...." Read more

"Website says this watch is 55mm, its not that big, it feels more like a 46mm watch...." Read more

6 customers mention0 positive6 negative

Customers are dissatisfied with the performance of the watch. They mention that the watch light stopped working, the analog didn't work, and the firmware was jacked. The hands and light stopped functioning, and it came with a factory malfunction.

"...And it wont fulfill the functions it was made to do without the app. Im disappointed in GShock. And disappointed Amazon has such high reviews...." Read more

"...The Bluetooth connection with the app is a joke and does not work well. I could not take advantage of the full functions...." Read more

"...packaging and delivered on time, only one issue, came with a factory malfunction. I returned and buy it again to same seller." Read more

"Will be sending it back it is not performing correctly" Read more

Absolutely Love it!
5 Stars
Absolutely Love it!
Came in the G-Shock case and was priced about $50 less than other companies. Arrived on time in perfect brand new condition. This is a technical watch, connects to your phones Bluetooth. Has a ton of functions and buttons.
Thank you for your feedback
Sorry, there was an error
Sorry we couldn't load the review

Top reviews from the United States

Reviewed in the United States on March 18, 2024
Reviewed in the United States on December 6, 2023
4 people found this helpful
Report
Reviewed in the United States on February 21, 2024
One person found this helpful
Report
Reviewed in the United States on February 5, 2024
Customer image
5.0 out of 5 stars Absolutely Love it!
Reviewed in the United States on February 5, 2024
Came in the G-Shock case and was priced about $50 less than other companies. Arrived on time in perfect brand new condition. This is a technical watch, connects to your phones Bluetooth. Has a ton of functions and buttons.
Images in this review
Customer image
Customer image
One person found this helpful
Report
Reviewed in the United States on December 24, 2023
3 people found this helpful
Report
Reviewed in the United States on February 16, 2020
Customer image
4.0 out of 5 stars Overall great watch but needs improvements.
Reviewed in the United States on February 16, 2020
Been wearing this beast for a couple weeks now. Here are the things I like so far.

Comfort- Casio has a way of making these big watches wear so well, lightweight, as it curves to the top of your wrist so nicely and mold to your arm.

Looks- I think a lot of people buy the mudmaster for this reason, this is a bold looking watch that is easy to read. I enjoy the new carbon case design here as well as the dial. The carbon fiber bezel really sets this watch off.

Functionality- Having owned a gravitymaster with Bluetooth in the past, the ability to pair via Bluetooth with your phone and set up this watch is a nice feature that I was hoping would come to the lower priced Mudmaster. I love the find your phone feature on this watch!

There are however a couple issues with this model that I hope Casio address is in future models.

Thermometer- The thermometer works although it takes 30 to 45 minutes off the wrist to get an accurate reading. Mine did need adjusting as it was inaccurate out-of-the-box. Since this watch communicates with the phone to update time and timezone information I don't understand why Casio didn't have the option to bypass the incredibly slow temperature sensor and read the local temperature from your phone and transfer it to the watch. It's almost like Casio was too afraid to make this too much like a smartwatch, but they already have one toe in the pool here, just go all in. I think the user should have the option in the app to bypass the sensors and pull the temp and weather information from a phone.

Lack of solar- initially I wasn't going to complain about this because this watch is not competing with the higher-priced G-Shock that has solar power and sapphire glass. I do however believe this would be a nice touch to all the G shock watches once they get up in this price range. Hopefully we'll see it in future models at this price point.

Pedometer- personally I have no idea why they threw this feature on here other than for gimmick. I doubt anyone is seriously going to use this much and once again this is something that your phone can do. Why spend the money on an extra sensor and waste space inside the watch when you could just have the watch read that information from your phone.

The negative digital display- I really hope they stop doing this on the mud Masters. This is just too hard to read in many lighting conditions.
Images in this review
Customer image Customer image
Customer imageCustomer image
64 people found this helpful
Report
Reviewed in the United States on March 22, 2024
Reviewed in the United States on October 5, 2023
6 people found this helpful
Report

Top reviews from other countries

Translate all reviews to English
Carlos M. Lopez
5.0 out of 5 stars Excelente reloj
Reviewed in Mexico on May 2, 2021
One person found this helpful
Report
Kankani arachchige Meran madusanka perera
1.0 out of 5 stars Nona buon prodotto
Reviewed in Italy on December 1, 2021
Houman
5.0 out of 5 stars Great watch and great customer service
Reviewed in Canada on July 1, 2020
One person found this helpful
Report
George
5.0 out of 5 stars Great watches
Reviewed in Canada on June 23, 2020
One person found this helpful
Report
Amazon Customer
5.0 out of 5 stars Did what it said the watch will do.
Reviewed in Canada on August 13, 2020